Timing device for explosive-engines



A. 0. POIRIER.

TIMING DEVICE FOR EXPLOSIVE ENGINES.

APPLICATION FILED MAY 16. 1919.

Patented Mar. 2,1920.

2 SHEETSSHEET I.

A. '0. POIBIER. nmmc DEVICE ron EXPLOSIVE ENGINES.

APPLICATION FILED MAY 5, F919. 1,332,568. Patented Man 2, 1920.

2 SHE ETS-SHEET 2.

ALFRED O. POIBIEB, OF NEW HAVEN, CONNECTICUT.

TIMING DEVICE FOR EXPLOSIVE-ENGINES.

Specification of Letters Patent.

Patented Mar. 2, 11920.

Application filed May 16, 1919. Serial No. 297,620.

To all whom it may concern:

Be it known that I, ALFRED O. POIRIER, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Timing Devices for Explosive Engines; and i do hereby declare the following, when taken in connection with. the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact descrip tion of the same, and which said drawings constitute part of this application, and represent, in-

Figure 1 a face view of a tin'iing device constructed in accordance with my invention.

Fig. 2 a top or plan view of the same.

Fig. 3 an underside face view of the plate with the timing ring and contact ring removed.

Fi i a sectional view on the line aP- of Fig. 3.

Fig. 5 an inside view of the contact car rier.

Fig. (3 a perspective view of the contact ring, detached.

Fig. 7 aperspective view of the timing ring; detached.

This invention relates to an improvement in timing devices for explosive engines and. is anv improvement on the construction shownand described in U. S. Patent No. 1,2 7,212 dated March 11, 1919.

In the more general construction of timing devices for exglosive engines, a fiber ring is employed with contacts mounted therein, this ring being fixed in a timing ring which may be turned. to regulate the time of spa'rle ing. In use it is these rings which become worn and have to be replaced, and one of the main objects of this invention is to provide a construction by which these timing rings may be readily removed so that the ring of insulating material may be replaced; and the invention consists in the construction hereinafter described and particularly recited in the claims.

In carrying out my invention I employ a front platelO formed with an eccentric boss 11 in which is mounted a pipe 12 through which wires extend to binding posts 13 for the usual electrical connection. The plate 10 is formed with a narrow flange 1 Within which sets the reduced edge 15 of the timing ring 16, this tlmmg ring being located between the plate 10 and the front of the engine in the usual manner, and is provided with the usual arm 17 by which it may be turned. Located in the timing ring 16 and against an annular shoulder 22 therein is a contact ring 18 of insulating material These blocks are dovetailed in the ring of insulating material so that they may be held by friction, In the edge of the ring of insulating material is a notch 20 which will engage with the lug 21 in the inner face of 'the timing ring 16 so that the contact car rier 18 will turn' with the ring. Within the timing ring and between the contact ring and the plate is a contact carrier 23 of insulating material and in it are mounted spring-actuated contact plungers 24' the ends 525 of which project into the path of move-- ment of the contact blocks 19. These con tact plungers are mounted in sockets 26 which are electrically connected with wires 27 leading through an annular groove 28 in the contact carrier to the pipe 12 through which they extend to the binding posts 13. Preferably and as shown an insulating washer 29 will be placed between the contact carrier and the adjacent face of the plate 10. The plate 10 may be provided with a rectangular boss 30 to enter a rectangular opening 31 formed in the end of a locking spring 32 by which the plate is held against rotation. The device operates in the same way as the timing devices of this type and when the contact ring becomes worn it is only necessary to spring the plate 10 outward so as to release the timing ring which may be removed with the contact ring. The contact ring may be readily forced out of the timing ring and a new one substituted.

I claim 1. A timing device of the class described comprising a plate, a tin'iing-ring extending into engagement with said plate, a contact ring of insulating material detachably mounted in the said timingaing and carrying contact blocks, and a contact carrier arranged between the said contact ring and the said plate and provided with contact spring plungers.

2. In a timing device of the class described comprising a plate formed with an annular flange, a timing ring having one edge adapted "to pass inside of said flange, said timing ring formed with an internal annular shoulder, a contact ring of insulating material .in which contact blocks 19 are mounted.

mounted in the timing ring, against said shoulder, and a contact carrier located between the timing ring and plate.

3. A timing device of the class described comprising a plate formed with an eccentric boss through which wires may extend, a

timing ring arranged adjacent to the said plate and formed with an internal annular shoulder, a contact rlng mounted 1n the t1n ing ring against said shoulder, and means for interlock ng the ring against 1ndependent rotation, and a contact carrier mounted between the eontact ring and the plate, said contact carrier provided with spring-actuated contact pins.

In testimony whereof, I have signed this specification in the presence of two subscrib ing witnesses.

ALFRED O. POIRIER.

Witnesses:

FREDERIC C. EARLE, C. LJWEED. 

